但是在一些职业里，像操纵巨型起重机或驾驶航天飞船，结果可能是毁灭性的。
But in some occupations, like operating a giant crane or piloting an aircraft, the consequences can be devastating.
在这个向下凹陷的干船坞里，一台先进的起重机提起大量的型钢，为伊朗订购的巨型油轮做总装。
In the cavernous dry dock, a modern crane lifts massive steel sections for final assembly of a gigantic oil tanker ordered by Iran.
工人们接受操作五十吨压土机和巨型起重机的训练。
Laborers were trained to handle 50 - ton compactors and giant cranes.
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